Implementation Details: We set \(K\)  as 6 and set \(\alpha \)  as 0.05. The learning rate is set to \(1\times 10^{-4}\) . We use Adam optimizer with batch size of 10 for training on four NVIDIA Titan Xp GPU. Following FastMRI [1]}, we use random cartesian undersampling to obtain the undersampled MR images.
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